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Microwave characteristics of BaPr2Ti4O12 and BaPr2Ti5O14 ceramics

Published online by Cambridge University Press:  03 March 2011

Koichi Fukuda ,
Ryozo Kitoh  and
Ikuo Awai
Koichi Fukuda
Affiliation:
Inorganic Materials Research Laboratory, Ube Industries, Ltd., 1978-5 Kogushi, Ube, Yamaguchi 755, Japan
Ryozo Kitoh
Affiliation:
Inorganic Materials Research Laboratory, Ube Industries, Ltd., 1978-5 Kogushi, Ube, Yamaguchi 755, Japan
Ikuo Awai
Affiliation:
Department of Electrical and Electronic Engineering, Yamaguchi University, Tokiwadai, Ube, Yamaguchi 755, Japan
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Abstract

Microwave dielectric properties and microstructures of BaPr2Ti4O12 and BaPr2Ti5O14 ceramics which have extremely similar crystal structures, were investigated, including those of the solid solution represented by the formula of Ba6−xPr8+2x/3Ti18O54 ceramics. It is suggested that BaPr2Ti5O14 ceramics are composed of mixed phases, approximately 85.0 vol. % Ba4.05Pr9.3Ti18O54 (x = 1.95), 8.1 vol. % TiO2, and 6.9 vol. % BaTi4O9. The microwave dielectric properties of the Ba6−xPr8+2x/3Ti18O54 system are strongly dependent on the x value, which is interesting for studying the relationship between microstructures and dielectric properties. Far infrared reflection spectra were also measured to study the mixed phases formed in these ceramics in more detail.

Type
Articles
Information
Journal of Materials Research , Volume 10 , Issue 2 , February 1995 , pp. 312 - 319
Copyright
Copyright © Materials Research Society 1995

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References

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